Weather-strip construction for window sashes



' April 7, 1931. H. A. CRONMILLER ET AL 1,800,008

WEATHERSTRIP CONSTRUCTION FOR WINDOW SASHES Filed July 1, 1929 QZ W lNVEOR ATTORN EYS Patented Apr. 7,' 1931 UNITED STATES PATENT OFFICE HOWARDA. CBONMILLER AND EDWARD F. CHAFFEE, OF SYRACUSE, NEW YORK, AS- SIGNORSTO THE 0. M. EDWARDS COMPANY INC., OF SYRACUSE, NEW YORK, A GOR-IPORATION OF NEW YORK WEATHER-STRIP CONSTRUCTION FOR WINDOW SASHESApplicationfiled July 1, 1929. Serial No. 375,180.

This invention relates to window sashes and has for its object, aweather strip for the bottom rail of the sash, which weather strip isyielding or resilient and shaped to conform to an inclined window sillwhen the sash is lowered against the sill to conform for irregularitiesin the sill surface.

, The invention consists in the novel features and in the combinationsand constructions hereinafter set forth and claimed.

In describing this invention, reference is made 'to the accompanyingdrawings in which like characters designate corresponding parts in allthe views.

Figure 1 is afragmentary elevation of a window sash embodying thisinvention.

Figure 2 is an edge view of parts seen in Figure 1 and the contiguousportion of the sill, the sash being shown in its closed position withthe weather strip compressed against the sill.

Figure 3 is a view similar to Figure 2 showing the sash as away from thesill and the weather strip in its normal form.

The sash may be of any suitable form, size and construction and includesthe usual stiles, rails and glass pane.

It will be understood that the sash is guided during its raising andlowering move ment in the window frame in any suitable manner.

1, 2 and 3 designate respectively, one of the stiles, the bottom railand the glass pane.

4: designates the sill which is shaped to provide a stop at 5 at theinner surface of the bottom rail when the sash is closed and with anoutwardly and usually downwardly slopof the bottom rail and providedwith inturned flanges 8. The construction of the bottom rail forms nopart of this invention.

9 designates the weather strip which extends lengthwise of the loweredge of the bottom rail. The weather strip here shown includes a baseportion 10 which is enclosed in a metal casing 11, in the form of aninverted channel, the side walls of the channel having inwardlyextending flanges 12 which slidably fit channels formed by bending backthe inturlngd flange 8 of the side walls of the bottom rai The weatherstrip is inserted in the bottom rail by an endwise sliding movement.This feature forms no part of this invention.

The base 10 is formed with grooves in its side faces for receiving theinturned flanges 8. The construction thus far described forms no part ofthis invention.

The portion of the weather strip below the bottom rail is formed hollowand of a general triangular shape in cross section, the hypotenuse ofthe triangular formation being are shaped providing an are shaped outerwall 13 which engages the surface 6 of the sill, one of the legs of thetriangle abutting against theinternal flanges 8 at the lower edge of thebottom rail 2, and the other leg 14 of the triangular formation beingparallel to the outer face of one of the side walls of the bottom railand preferably flush therewith. The internal cavity 15 of the weatherstrip is also triangular in general form with a wall with the hypotenusethereof substantially parallel to the outer wall 13 of the weather stripand the wall 16 along one of the legs of the triangular formationopposed to the plane of the lower edge of the bottom rail parallel tothe third wall 17 of the triangular formation extending in the samedirection as the outer wall 14 of the weather strip but normallyinclined out of a plane parallel to the wall 14, the inclination beingupwardly away I from such wall 13, so that the upright wall 14 isthicker at its top and bottom.

The upright wall 14 is thicker and more rigid than the hypotenuse wall13.

Owing to the shape of the lower portion 8 of the weather strip and theformation of the to the surface 5 of the sill and to any irregularitiestherein due to any particles of dirt 'ete., adhering thereto so that thesash is weather tight along the bottom rail, when i I closed and alsoowing to the wall 14: and its formation, it yields slightly outwardly,(Figure 2) when the wall 13 is compressed, so that the nose at the angleof the two walls is forced outwardly against the guide strip 4* when thesash is closed and prevents the accumulation of dust that wouldotherwise occur in the pockets at the, ends of the weather strip 1n theguides 45* whereby dust works under the Weatherstrip under the force ofthe wind created by the train in motion.

What we claim is:

1. A window sash having a weather strip along the edge of its bottomrail for coacting with the sill of the window frame, said weather stripbeing formed of resilient material and formed hollow and having itslower sill engaging surface inclined and one of its outer surfacesvertical and located in the plane of one side face of the bottom rail.

2. A window sash having a weather strlp along the edge of its bottomrail for coacting with the sill of the window frame, said weather stripbeing formed of resilient material and formed hollow and having itslower sill engaging surface inclined and one of its outer surfacesvertical and located in the plane of one side face of the bottom rail,the

wall on which said lower surface is formedbeing flexible and the wall onwhich said upright surface is provided being arranged to receivecompression force when the sash is against the sill.

3. A window sash having a weather strip along the edge of its bottomrail for coacting with the sill of the window frame, said weather stripbeing formed of resilient material and formed hollow and having itslower sill engaging surface inclined and one of its outer surfacesvertical and the internal cavity of the weather strip being normally ofgeneral triangular form with the wall thereof at the hypotenuse of thetriangular formation substantially parallel to the sill engaging surfaceof the weather strip.

4. A window sash having a weather strip along the edge of its bottomrail for coacting with the sill of the window frame, said weather stripbeing formed of resilient material and having a triangular portionformed hollow and having its lower sill engaging wall inclined and oneof its outer walls upright.

5. A window sash having a weather strip along the edge of its bottomrail for'coacting with the sill of the window frame, .said weather stripbeing formed of resilient material, the portion of the weather stripbelow the bottom rail being hollow and triangular in general form withthe hypotenuse of the triangular formation normally are shaped and oneof the legs of the triangular formation abutting against the edge of thebottom rail and the other leg located in the plane of one of the sidefaces of the bottom rail to present a continuous surface flush with saidside face of the bottom rail.

6. A window sash-having a weather strip along the edge of its bottomrail for coacting with the sill of the window frame, said weather stripbeing formed of resilient material, the portion of the weather stripbelow the bottom rail being hollow and triangular in general form withthe hypotenuse of the triangular formation normally are shaped and oneof the legs of the triangular formation being horizontal and abuttingagainst the edge of the bottom rail and the other leg being upri ht andlocated substantially in the plane of one of the side faces of thebottom rail, the internal cavity of the weather, strip being located inthe triangular portion of the weather strip and being also triangular ingeneral form with the hypotenuse of the triangular formationsubstantially parallel to the outer curved face of the weather strip.

7. A window sash having a weather strip along the edge of its bottomrail for coacting with the sill of the window frame, said weather. stripbeing formed of resilient material, the portion of the weather stripbelow the bottom rail being hollow and triangular in general form withthe hypotenuse of the triangular formation normally are shaped and oneof the legs of the triangular formation being horizontal and abuttingagainstthe edge of the bottom rail and the other leg being upright andlocated substantially in the plane of one of the side faces of thebottom wall, the internal cavit of the weather strip being located inthe triangular portion of the weather strip and being also triangular ingeneral form with the hypotenuse of the triangular formationsubstantially parallel to the outer curved face of the weather strip,the upright wall of the triangular formation being thicker than thehypotenuse wall.

8. A window sash having a weather stripof the weather strip and beingalso triangu- 13o lar in general form with the hypotenuse of thetriangular formation substantially parallel to the outer curved face ofthe weather strip, the upright wall of thetriangular formation beingthicker than the hypotenuse wall and thicker at its top than at itsbottom.

9. A window sash having a weather strip along the edge of its bottomrail for coacting with the sill of the window frame, said weather stripbeing formed of resilient material and being of hollow formation, alower sill engaging wall located below said hollow portion, and anupright wall located in front of said hollow portion and of heaviercross section than the sill engaging wall for carrying the weight of thesash with little flexing of the upright wall.

In testimony whereof, we have hereunto signed our names, at Syracuse, inthe county of Onondaga and State of New York, this 22nd day of June,1929.

H. 'A. CRONMILLER. EDWARD F. CHAFFEE.

